Battery pack



FIG. 1 is a front perspective view of my design.

FIG. 2 is a left side view of my design.

FIG. 3 is a right side view of my design.

FIG. 4 is a top view of my design.

FIG. 5 is a bottom view of my design.

FIG. 6 is a front view of my design.

FIG. 7 is a rear view of my design.

FIG. 8 is an enlargement of a portion of the rear view of my design; and,

FIG. 9 is a rear perspective view of my design.

The broken line showing of the circle and line in FIG. 7 is included for the purpose of indicating the enlarged area shown in FIG. 8 and forms no part of the claimed design. 

The ornamental design for a battery pack, as shown and described. 